What is the meaning of Duty?

That which one is morally or legally obligated to do.

The state of being at work and responsible for or doing a particular task.

A tax placed on imports or exports; a tariff.

One's due, something one is owed; a debt or fee.

Respect; reverence; regard; act of respect; homage.

The efficiency of an engine in work done per unit of fuel; particularly, the number of pounds of water which a steam pumping engine can raise one foot by burning one bushel or hundredweight of coal.

The act of urination or defecation, especially for a dog.

past passive participle of duś

Source: wiktionary.org